#英语启蒙动画 #每日英语学习 #每天进步一点点 What Is An Atom 什么是原子 - 林阅绘本馆于20220510发布在抖音,已经收获了559个喜欢,来抖音,记录美好生活!
What is the smallest unit of matter? A. Atom B. Molecule C. Cell D. Organ 相关知识点: 试题来源: 解析 A。解析:原子(Atom)是物质的最小单位。分子(Molecule)由原子组成;细胞(Cell)是生物体的基本结构和功能单位;器官(Organ)是由细胞和组织构成的。从语法上这是关于物质基本单位的特殊疑问句,选项为...
What is the smallest unit of matter? A. Atom. B. Molecule. C. Electron. D. Proton. 相关知识点: 试题来源: 解析 A。解析:原子是物质的最小单位。选项 B,分子不是最小单位;选项 C,电子是原子的一部分;选项 D,质子也是原子的一部分。
What is the smallest unit of matter? A. Atom B. Molecule C. Electron D. Proton 相关知识点: 试题来源: 解析 A。本题考查对物质最小单位的了解,原子是物质的最小单位。B 选项分子不是最小单位;C 选项电子是原子的组成部分;D 选项质子也是原子的组成部分。
What changes when an ion is made from an atom? A. the number of electrons only B. the number of neutrons only C. the number of protons only D. the number both of protons and of neutrons 相关知识点: 试题来源: 解析 A 考查实际运用。A. 仅电子数量(变化),B. 仅中子数量(变化),C. ...
百度试题 结果1 题目write down___ an atom is likeA howB whoC whatD which 相关知识点: 试题来源: 解析 答案为C 反馈 收藏
What is the center of an atom called?Atoms:Atoms are the smallest indivisible working unit of matter. It is composed of three subatomic particles: neutrons, electrons, and protons. Neutrons are neutrally charged whereas electrons are negatively charged. Protons are the subatomic particles of an ...
百度试题 结果1 题目(iii) What is the total number of particles in the nucleus of an atom ofX?34[1] 相关知识点: 试题来源: 解析 34 反馈 收藏
百度试题 结果1 题目A___ has taught us what atoms are made up of and how powerful the atom bomb is. A. seaman B. salesman C. naturalist D. scientist 相关知识点: 试题来源: 解析 D 反馈 收藏
Most of an atom is empty space. If an atom were about as big as a baseball stadium, the nucleus would be the size of a pea in the very center and the electrons would be somewhere on the outside edge.What makes an atom of gold different from an atom of iron is the number of ...